Great start... watch the distances between one body element and the next... Specifically the curve/rise of the ballarina's shoulder and the crest of the breast bone/chest. in the photo, this distance is very minimal in comparison to where your base lines are...

Some progress... But... I made mistakes with her hair, I was trying to correct it and it turned out to be so strange and crazy hair... Well, she has to stay like this I have to finish background and work a little bit more on shading and details